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[Objective] To establish optimal extraction technology of polyphenols from Dioscorea opposita Thunb..[Method] Using content of polyphenols in Dioscorea opposite Thunb.as investigation index,the extraction conditions of total polyphenols from Dioscorea opposita were optimized by orthogonal test based on single factor test.[Result] The optimum extraction conditions were confirmed to be 50% acetone of extraction solvent(V/V),1:15 of the solid to liquid ratio(W/V),80 min of extraction duration,55 ℃ of extraction temperature and 2 times of extraction times.[Conclusion] This study offered theoretical references for the further research and development of Dioscorea opposita Thunb.polyphenols.
[Objective] To establish optimal extraction technology of polyphenols from Dioscorea opposita Thunb .. [Method] Using content of polyphenols in Dioscorea opposite Thunb. As investigation index, the extraction conditions of total polyphenols from Dioscorea opposita were optimized by orthogonal test based on single factor The optimum extraction conditions were confirmed to be 50% acetone of extraction solvent (V / V), 1: 15 of the solid to liquid ratio (W / V), 80 min of extraction duration, 55 ° C of extraction temperature and 2 times of extraction times. [Conclusion] This study offered theoretical references for the further research and development of Dioscorea opposita Thunb. pyolhenols.